Fourplex wire is often used to replace the electrical run from the deck at the base of the mast aft to the electrical panel. In early boats (through the mid 80's) the wires were run within the thickness of the deck. There was no conduit and you have no access to it.
Our marine grade wire is tinned along it's entire length. Tinned wire prevents corrosion from creeping up and throughout the wire, Corrosion compromises the ability of the wire to carry the electrical load and causes a major voltage drop at the far end of the conductor.
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The four 16 gauge conductors, enclosed in a flat, white casing are a clean and unobtrusive way to replace the existing damaged or corroded circuit. It is also the correct choice for upgrading a mast originally equipped with only an anchor light or perhaps a steaming_light. Simply lead this cable inside the boat, tucked in neatly into the top corner, forward of the main bulkhead. On a Catalina 22 it hides nicely just forward of the privacy curtain track. It provides all the circuits you need for a deck light, steaming light, and masthead anchor light.
Our marine grade wire is both larger and has finer strands than automotive wire. Automotive is up to 12% smaller than marine. Marine wire lasts longer, is easier to route, and carries more electrical current than automotive wire.
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